Machine for mitering the metal of show-case moldings



2 SheetsSl1eet 1.

(Model.)

1?. X. GANTER.

MACHINE FOR MITERING THE METAL OP SHOW UASE MOLDINGS.

Patented Feb. 26, 1889.

ATT O RNEY.

PETEES. PhnimLithogrzphcr, Wazhmgan. D.

(ModeL) 2 Sheets-Sheet 2.

F. X. GANTER.

MACHINE FOR MITERING THE METAL 0F SHOW CASE MOLDINGS.

No. 398,603. Patented Feb. 26, 1889.

WITNESSES: INVENTOR:

BY $.4Lww

ATTORNEY. 4

N PETER; Phnky-Lnhogrflphbn Washington D. C

UNITED STATES PATENT OFFICE.

FRANCIS X. GAXTER, OF BALTIMORE, MARYLAND.

MACHINE FOR MITERING THE METAL OF SHOW-CASE MOLDINGS.

SPECIFICATION formingpart of Letters Patent No. 398,603, dated February 26, 1889. Application filed January 28,1888- Serial No. 262,214. (Model) citizen of the United Statesresiding at Baltimore, in the State of Maryland, have in vented certain new and useful Improvements in Machines for Hitering the Metal of Show- Case Moldings, of which the following is a specification.

My invention relates to a machine for mitering metal show-case moldings. These moldings are composed of wood covered by sheet metal. The metal usually employed is German silver. Heretofore it has been an eXpensive operation to secure an accurate fit of the moldings at the miter-joints which form the corners of the case. The metal molding has usually been cut by a saw, and then fitted by a hand-file.

My invention relates to a machine-cutter for cutting metal moldings to a miter, whereby the jointed parts forming the corners of showcases will fit accurately and without a resort to the hand-file.

The drawings illustrate one form of machine for carrying out the invention.

Figure 1 is a vertical longitudinal section of the machine. Fig. 2 is a top view of the machine. Fig. 3 is a front elevation of the machine. Fig. l is a cross-section on the line 4: 4 of Fig. 2. Fig. 5 is a view of a piece of molding cut at one end by the machine described herein. Fig. 6 is a cross-section of the molding. Fig. 7 shows two pieces of molding mitered together.

The knives or cutters C C may have edges of varying shape or configuration, so as to cut metal-plate moldings of various designs.

The invention consists in the combination, in a machine, of a bed-plate or othersupport for the sheet-metal molding and a cutter or knife which has position and movement in a plane that is inclined to the vertical with respect to the horizontal longitudinal plane of the bed-plate or support and oblique in a cross direction with respect to said bed-plate or support. It is immaterial whether the bedplate or support be horizontal, as shown, or whether it have some other position. It is the relative position of the plane of the bedplate or other support as compared with the plane of movement of the cutters or knives that is essential.

At the front end, between the two standards,

is a cross-bar or knife-seat, B, on which the lower or stationary knife, 0, is secured. The said cross-bar or knife-seat B may be a sep arate piece, or, as in the drawings, maybe integral with the bed-plate B.

The upper knife, 0, is attached by screws 1 and bolts 0 to a sloping slide-plate or knifecarrier, D, having at each edge a tongue, (I,

which moves up and down in sloping grooves e, formed along the inclined front margins of the standards A and plates F, secured by the bolts f. The molding to be cut is placed on the support or bed-plate B. hile the piece of molding is being mitered by the machine it rests lengthwise upon the top surface of the bed-plate B, between the two guidestrips 0, and the end to be cut is presented to the cutters C C. The posit-ion of the molding with respect to the cutters will therefore be understood.

It will be seen that the knife-carrier and knife 0 move up and down in a plane that is inclined with respect to the plane occupied by the piece of molding to be cut. One of the inclined standards A has position in advance of the other, as shown in Fig. 2, and the knife-carrier D,which moves up and down in the grooves c on these standards, has an oblique position across the bedplate-that is, in a direction from side to side.

From the foregoing it will be seen the peculiarity of the position and movement of the cutters or knives C C with respect to the position in which the molding is supported is that one of said cutters reciprocates in a plane that is inclined in the up and down direction and oblique in the cross direction. In the present instance one cutter, C, only moves; but it is immaterial whether one or both move. In the drawings the position of the bed-plate shows that the piece of m01ding that is to be cut will be supported in a horizontal plane, While the cutter C has a reciprocating movement in a plane that is inclined to the horizontal plane of the molding, and that is also oblique in a direction crosswise to the longitudinal dimension of the molding. The thing that is essential is that the relative position referred to be main- V gages one of the racks g on the knife-carrier plate. A lever, L, attached to the shaft serves for partly turning it, and therebycausingthe sectors is to act on the racks g to raise and lower the carrier and knife C. It will be obvious to any mechanic that other devices or constructions may be substituted for the racks g, shaft H, sectors 7;, and lever L to cause the knife C to reciprocate. My in vention, therefore, is not limited to a machine which has these particular parts.

The lower cutter or knife, C, may be vertically adjusted by the screws m and 02.

The top surface of the bed-plate B has a guide-strip, 0, at each side, having a space, p, between of proper width for the molding. The piece of molding to be cut is to be placed on thesaid top surface between the two guidestrips and pushed endwise to the cutters C 0.

Having described myinvention, I claim and desire to secure by Letters Patent of the United States- 1. A machine for mitering sheet-metal moldings, comprising the combination of a support, 13, for the piece of mold ng, and a cutter or knife moving in a plane that is inclined one way with respect to said support and oblique in a crosswise direction with respect to said support.

2. A machine for mitering sheet-n1etal moldings, comprising the combination of a support, B, for the piece of molding, standards A, having grooves, and a cutter orknife havin g tongues which fit in said grooves and move in a plane that is inclined one way with respect to said support and oblique in a crosswise direction with respect to said support.

3. A machine for mite ring sheet-metal. moldings, comprising the combination of a support, B, for the piece of molding, two inclined standards at the front end of the support, one at each side of the machine and one having position in advance of the other, and each standard provided with a groove, and a cutter or knife having tongues which fit in said grooves.

4. A machine for mitering sheet-metal moldings, comprising the combination of a support, B, for the piece of molding, two inclined standards at the front end of the support, one at each side of the machine and one having position in advance of the other, and each standard provided with a groove, a cutter or knife having tongues which fit in said grooves, a lever, L, and means, substantially as described, connecting the lever and movable cutter.

In testimony whereof I affix my signature in the presence of two witnesses.

FRANCIS X. GANTER.

Vitn esses:

JOHN E. Messrs, .Tno. T. MADnoX. 

